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+--- Thread: I think I screwed up! (/showthread.php?tid=264940)
I think I screwed up! - vicrock - 03-09-2022
I'm prepping a 2019 MBP for sale - followed the instructions on the Apple site, all the steps - but since it was running Catalina, I decided to download and install Monterey - and now I'm getting the dreaded ??
I have an external drive with both a CCC and time machine backup - on separate partitions, but when I try to boot from it, I'm getting a message that says the security preferences don't allow an external drive boot.
Any way to get out of this pickle??
Re: I think I screwed up! - btfc - 03-09-2022
‘ About Startup Security Utility on a Mac with the Apple T2 Security Chip ‘
https://support.apple.com/en-us/HT208198
Re: I think I screwed up! - vicrock - 03-09-2022
Thanks btfc - that did the trick. It took a LONG time and several restarts, but all seems well now.